We spend so much time complaining, that I think a thank you is appropriate.
I had to cancel my December trip to Montenegro and ended up with an open Turkish Air ticket.
When I rebooked it for July it could not be done on the internet and I had to call
The wait time was 40 minutes. But after that the gentleman was amazingly helpful. Despite technical glitches requiring him to call me back a few times we got it done. With patients and understanding all things are possible. And this wasnt easy. We turned 2 combined RT tickets Houston - Podgorica into one open Jaw, Houston - Kyiv and Istanbul to Houston. The other passenger on the same original ticket was changed from RT Houston - Podgorica to RT Houston - Istanbul.
The upcharge was minimal.
I am sure others will face the same or worse. I just suggest you understand they have a tough job, English isnt their first language and if you are polite and understanding they will be encouraged to help you.